there's a website called www.imeem.com where according to the site "is an online community where people and groups can upload, share, tag, and playlist the media they care about."

If anybody's looking for salsa music, there are a lot of people that have uploaded their salsa collections there. Check it out. I hope you guys find it useful. Unfortunately, you can't download the songs but atleast you'll be able to get the music information there.